Aquihelicascus W. Dong, H. Zhang & Doilom, Fungal Divers (2020).

MycoBank number: MB 557806; Index Fungorum number: IF 557806; Facesoffungi number: FoF 08721; 3 morphological species (Dong et al. 2020), 1 species with molecular data

Type speciesAquihelicascus thalassioideus (K.D. Hyde & Aptroot) W. Dong & H. Zhang, Fungal Divers (2020).

≡ Massarina thalassioidea K.D. Hyde & Aptroot, Nova Hedwigia 66(3-4): 498 (1998)

= Helicascus thalassioideus (K.D. Hyde & Aptroot) Huang Zhang & K.D. Hyde, Sydowia 65(1): 159 (2013)

NotesAquihelicascus was introduced to accommodate the three species, A. thalassioideus (type species), A. songkhlaensis and A. yunnanensis (Dong et al. 2020), based on phylogenetic analyses. The three species formed a clade sister to Helicascus but as a different genus. Aquihelicascus differs from Helicascus in having clavate asci, with uncoiled endoascus, 2-seriate, ellipsoidal, symmetrical, hyaline ascospores, with rounded ends, while Helicascus has subcylindrical asci, with coiled endoascus, 1-seriate, obovoid, asymmetrical, brown ascospores, with apiculate ends (Luo et al. 2016, Dong et al. 2020).